1 #ifndef __NET_FIB_RULES_H
2 #define __NET_FIB_RULES_H
4 #include <linux/types.h>
5 #include <linux/slab.h>
6 #include <linux/netdevice.h>
7 #include <linux/fib_rules.h>
9 #include <net/rtnetlink.h>
12 struct list_head list
;
20 /* 3 bytes hole, try to use */
23 struct fib_rule __rcu
*ctarget
;
29 int suppress_prefixlen
;
30 char iifname
[IFNAMSIZ
];
31 char oifname
[IFNAMSIZ
];
35 struct fib_lookup_arg
{
38 struct fib_rule
*rule
;
40 #define FIB_LOOKUP_NOREF 1
41 #define FIB_LOOKUP_IGNORE_LINKSTATE 2
44 struct fib_rules_ops
{
46 struct list_head list
;
52 int (*action
)(struct fib_rule
*,
54 struct fib_lookup_arg
*);
55 bool (*suppress
)(struct fib_rule
*,
56 struct fib_lookup_arg
*);
57 int (*match
)(struct fib_rule
*,
59 int (*configure
)(struct fib_rule
*,
61 struct fib_rule_hdr
*,
63 int (*delete)(struct fib_rule
*);
64 int (*compare
)(struct fib_rule
*,
65 struct fib_rule_hdr
*,
67 int (*fill
)(struct fib_rule
*, struct sk_buff
*,
68 struct fib_rule_hdr
*);
69 u32 (*default_pref
)(struct fib_rules_ops
*ops
);
70 size_t (*nlmsg_payload
)(struct fib_rule
*);
72 /* Called after modifications to the rules set, must flush
73 * the route cache if one exists. */
74 void (*flush_cache
)(struct fib_rules_ops
*ops
);
77 const struct nla_policy
*policy
;
78 struct list_head rules_list
;
84 #define FRA_GENERIC_POLICY \
85 [FRA_IIFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \
86 [FRA_OIFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \
87 [FRA_PRIORITY] = { .type = NLA_U32 }, \
88 [FRA_FWMARK] = { .type = NLA_U32 }, \
89 [FRA_FWMASK] = { .type = NLA_U32 }, \
90 [FRA_TABLE] = { .type = NLA_U32 }, \
91 [FRA_SUPPRESS_PREFIXLEN] = { .type = NLA_U32 }, \
92 [FRA_SUPPRESS_IFGROUP] = { .type = NLA_U32 }, \
93 [FRA_GOTO] = { .type = NLA_U32 }
95 static inline void fib_rule_get(struct fib_rule
*rule
)
97 atomic_inc(&rule
->refcnt
);
100 static inline void fib_rule_put(struct fib_rule
*rule
)
102 if (atomic_dec_and_test(&rule
->refcnt
))
103 kfree_rcu(rule
, rcu
);
106 static inline u32
frh_get_table(struct fib_rule_hdr
*frh
, struct nlattr
**nla
)
109 return nla_get_u32(nla
[FRA_TABLE
]);
113 struct fib_rules_ops
*fib_rules_register(const struct fib_rules_ops
*,
115 void fib_rules_unregister(struct fib_rules_ops
*);
117 int fib_rules_lookup(struct fib_rules_ops
*, struct flowi
*, int flags
,
118 struct fib_lookup_arg
*);
119 int fib_default_rule_add(struct fib_rules_ops
*, u32 pref
, u32 table
,
121 u32
fib_default_rule_pref(struct fib_rules_ops
*ops
);